Swiss Railways (SBB/CFF/FFS) operates a train from Geneva to Pralognan-la-Vanoise every 4 hours. Tickets cost $26 - $45 and the journey takes 1 h 17 min. French Railways (SNCF) also services this route hourly. Alternatively, Altibus operates a bus from Geneva to Pralognan-la-Vanoise 3 times a day. Tickets cost $18 - $90 and the journey takes 2 h. Altibus also services this route twice daily.
From Geneve train to Chambery-Challes-E, train to Moutiers-Salins-Brides-les-Bains, then taxi to Pralognan-la-Vanoise. 3 h 57 min 93€. From Geneva Airport bus to Moutiers then bus to Pralognan la Vanoise. 4 h 15 min 83€. From Geneva drive to Pralognan-la-Vanoise. 1 h 55 min 18€.